TY - JOUR
T1 - Energy-efficient ground base station antenna array system for wireless back-hauling and two state charging of drone base stations
AU - Lahiry, Archiman
AU - Le, Khoa N.
AU - Bao, Vo Nguyen Quoc
AU - Tam, Vivian W. Y.
PY - 2023/8/1
Y1 - 2023/8/1
N2 - A ground base station (GBS) antenna array system (AAS) geometry and feed technique are proposed for 360° azimuth beam scan, elevation beam scan, azimuth beam-width control, elevation beam-width control, and in existing AASs these four capabilities do not coexist. First, the results confirm that the number of active radio-frequency (RF) switches in the proposed AAS feed network is reduced by more than 99%, and the AAS achieves a power consumption reduction of up to 50% without fully connected (FC) architecture and 35% with FC architecture compared to the existing AAS. Also, an independent GBS AAS azimuth and elevation plane beam-width control can be achieved from 65° to 0.01° which makes it suitable for GBS-assisted wireless back-hauling plus wireless charging of unmanned aerial vehicle base stations (UAV-BSs), dynamic GBS sectorisation order control, and millimeter wave beam tracking. Also, a parallel concurrent UAV-BS battery charging configuration with power source swap capability is proposed to charge UAV-BS using the GBS back-haul and onboard power amplifier (PA) system as the power sources. The results show that the proposed charging configuration improves hovering time by 180.7% compared to the existing onboard PA system configuration for battery charging. Furthermore, the proposed charging configuration can recharge the battery of the inactive state UAV-BS to increase the state of charge of two 16-Ah batteries to 80% in 180.13 min, and UAV-BS's inactive state charging was not proposed in the existing onboard PA system configuration for UAV-BS's battery charging.
AB - A ground base station (GBS) antenna array system (AAS) geometry and feed technique are proposed for 360° azimuth beam scan, elevation beam scan, azimuth beam-width control, elevation beam-width control, and in existing AASs these four capabilities do not coexist. First, the results confirm that the number of active radio-frequency (RF) switches in the proposed AAS feed network is reduced by more than 99%, and the AAS achieves a power consumption reduction of up to 50% without fully connected (FC) architecture and 35% with FC architecture compared to the existing AAS. Also, an independent GBS AAS azimuth and elevation plane beam-width control can be achieved from 65° to 0.01° which makes it suitable for GBS-assisted wireless back-hauling plus wireless charging of unmanned aerial vehicle base stations (UAV-BSs), dynamic GBS sectorisation order control, and millimeter wave beam tracking. Also, a parallel concurrent UAV-BS battery charging configuration with power source swap capability is proposed to charge UAV-BS using the GBS back-haul and onboard power amplifier (PA) system as the power sources. The results show that the proposed charging configuration improves hovering time by 180.7% compared to the existing onboard PA system configuration for battery charging. Furthermore, the proposed charging configuration can recharge the battery of the inactive state UAV-BS to increase the state of charge of two 16-Ah batteries to 80% in 180.13 min, and UAV-BS's inactive state charging was not proposed in the existing onboard PA system configuration for UAV-BS's battery charging.
UR - https://hdl.handle.net/1959.7/uws:69795
U2 - 10.1109/JIOT.2023.3263134
DO - 10.1109/JIOT.2023.3263134
M3 - Article
SN - 2327-4662
VL - 10
SP - 13798
EP - 13813
JO - IEEE Internet of Things Journal
JF - IEEE Internet of Things Journal
IS - 15
ER -
